The article examines the structure and components of intellectual capital of enterprises. It was determined that determining the level of intellectual capital is important for assessing the level of development and competitiveness of the enterprise. The article discusses the tree of logical inference, fuzzy knowledge bases and logical equations. The use of this model will make it possible to more comprehensively evaluate and compare different enterprises with each other, as well as to study the change in the level of intellectual capital after carrying out certain activities.